/*#include<cstdio>
     #include<cstdlib>
     #include<cstring>

     int main(void)
     {
         freopen("ds.in","r",stdin);
    freopen("ds.out","w",stdout);

         while(1){
             char c1, c2, n[100], *ch;
             scanf("%s %c %c ", n, &c1, &c2);
             if(n[0] == '0' && n[1] == 0 && c1 == '0' && c2 == '0')
                break;
           for (int i = 0 ; i < strlen(n) ; i++)
                if(n[i] == c1)
                    n[i] = c2;
            printf("%d\n", atoi(n));
        }
        return 0;
    }
*/
#include <cstdio>

using namespace std;


   int nr,c,c1,k,i,a[100];
int main()
{
 //   freopen("ds.in","r",stdin);
   // freopen("ds.out","w",stdout);
   // back();

    while(1)
   {
       scanf("%d%d%d",&nr,&c,&c1);
       if(nr==0&&c==0&&c1==0)
        return 0;
        a[0]=0;
        if(nr==0&&c==0)
            printf("%d\n",c1);
            else if(nr==0&&c!=0)
                printf("0\n");
            else
        {

            while(nr>0)
       {
           a[0]++;
           a[a[0]]=nr%10;
           nr/=10;
       }
       k=0;

       for(i=a[0];i>0;i--)
       {
           if(a[i]==c)a[i]=c1;
       }
       i=a[0];
       while(a[i]==0)a[i]=0,i--;
       if(i==0)
        printf("0\n");
       else
      {

      for(i=i;i>0;i--)
        printf("%d",a[i]);
       printf("\n");
      }
        }
   }
 //  printf("73\n");
    return 0;
}